Alloy



UNITED STATES. PATENT OFFICE.

' CALVIN VOS, OF NEW YORK, N. Y.

ALLOY.

No Drawing.

7 '0 all whom it may concern:

Be it known that I, CALVIN Vos, a citizen of the United States, residingat New York city,'in the county of New York and State of New York, haveinvented certain new and useful Improvements in Alloys, of which thefollowing is a specification.

This invention relates to an improvement in alloys. L

The prime object of the invention is to produce an alloy in which existdegasifying and deoxidizing properties, in addition to which it will actas a medium for introducing into steel, and the ferrous groups ofmetals, small quantities of zirconium-in a fully reduced condition,thereby preventlng hard spots so prevalent when zirconium is added bymany other Well known methods.

The combination of ingredients hereinafter described possessesproperties superior to aluminum and other degasifying agents ordinarilyemployed, and the claim is made that it constitutes one of thefew meansof entirely eliminating the last vestige of oxids, gases, etc.,remaining in the steel after the addition of ferro-silicon.

The above mentioned objects, and such other objects as may appear fromthe ensuing description are attained by the use of my improved alloypossessing'the combined composition of metals hereinafter set forth andparticularly pointed out in the claims appended hereto.

My improved alloy consists of aluminum within the limits-of from 90 to95 per cent.; magnesium Within the limits of from 2 to 1 0 per cent.;sodium fiuorid within the limits of from 0.01 to 5 per cent.; zirconiumwithin the limits of from 0.01 to 6 per cent.;

the limits of from melted and mixed together, I then add the, magnesium,so that when all of the metals herein referred to are thoroughlymeltedand and Specification of Letters Patent P t t June 21 1921Application filed September 4, 1920. Serial No. 408,150. I

The improved alloy constituting my in vention consists of an excess ofaluminum and magnesium properly mixed with smaller proportions of sodiumfluorid, zirconium and ferro-silicon; these combined in redients beingsuitably mixed and adde at the proper time constitutes the means bywhich an lmproved product is obtained, and which thoroughly eliminatesfrom the steel all oxids, gases, etc., thus creating a more densehomogeneous product, and by the use of small quantities of zirconium ina fully reduced condition the formation of hard spots, usually prevalentwhen zirconium is added by other, methods, is therebyavoided.

It will be understood that when all of the metals have been properlymixed and reduced to a molten mass, the constant gentle stirring willcause such gases as may be contained .in the molten metal to escapetherefrom, thereby insuring a more dense and homogeneous product.

By means of the ingredients and my method hereinbefore referred to, animproved alloy is obtained which is possessed of unusual tensiblestrength and density, and which is especially desirable in themanufacture of structural work where it is of the utmost importance thatsuch work should possess flawless qualities and the maximum of strength.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. An alloy possessing degasifying and deoxidizingproperties consisting of a major quantity of aluminum, a minor quantityof magnesium, ferro-silicon and zirconium in relatively smallproportions.

2. An alloy possessing degasifying and deoxidizing properties consistingof aluminum, magnesium, ferro-silicon, and zircomum, the 'alummum beingapproxnnately from to per cent.; the magnesium from 2 to 10 per cent.;the ferro-silicon from 0.02 to" 3 per cent. and the zirconium from 0.01to 6 per cent. l

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